A four-phase synergic structure of creative medium composition, its preparation method and application

Abstract

This invention discloses a four-phase synergistic creative medium composition, its preparation method, and its application. The preparation method includes the following steps: (1) treating pigments with an interface modifier to obtain modified pigments; (2) melting wax-based materials and lubricants in a main reactor to form a uniform oil-phase continuous matrix; (3) adding the modified pigments to the molten oil phase and stirring to disperse them evenly, then dripping the preheated aqueous phase component at a constant rate of 40~60 ml / min to cause interfacial reorganization within the system, transforming it from an oil-in-water type to a bicontinuous phase structure; (4) adding functional resins to the integrated system and stirring to dissolve them, then crystallizing and solidifying the system through gradient cooling, followed by molding or extrusion molding and aging to obtain the finished product. The composition provided by this invention is an "all-functional" medium—combining the smoothness of oil pastels, the durability of crayons, the detail of pencils, and the fluidity of watercolors.

Description

Technical Field

[0001] This invention relates to the field of art painting materials technology, and more specifically to a creative medium composition with a four-phase synergistic structure, its preparation method, and its application. Background Technology

[0002] At the intersection of contemporary materials science and fine chemicals, the development of artistic mediums is undergoing a paradigm shift from single physical properties to multi-dimensional phase synergy. Traditional painting mediums, such as the hydrophobicity of oil pastels, the hard wax base of crayons, the solid peeling properties of pencils, and the hydrophilic diffusion properties of watercolors, are often chemically mutually exclusive. Oil pastels rely on nonpolar long-chain alkanes as a continuous phase, providing excellent spreadability, but their hydrophobic surface prevents water molecules from penetrating; while solid watercolors, based on water-soluble polymers (such as gum arabic), lack the thickness and physical layering force provided by oils.

[0003] Therefore, how to provide a creative medium composition that combines the characteristics of various types of painting materials is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides a creative medium composition with a four-phase synergistic structure, its preparation method and application, and transforms the composition into a "full-function" medium - that is, combining the smoothness of oil pastels, the durability of crayons, the detail of pencils and the fluidity of watercolors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A method for preparing a creative medium composition with a four-phase synergistic structure includes the following steps: (1) Solid-phase pretreatment: The pigment is treated with an interface modifier to obtain the modified pigment; (2) Construction of oil phase matrix: The wax-based material and lubricant are melted in the main reactor to form a uniform continuous oil phase matrix; (3) Controlled phase transformation and integration: The modified pigment from step (1) is added to the molten oil phase from step (2) and stirred to disperse evenly. The preheated aqueous phase component is added dropwise at a constant rate of 40~60 ml / min to cause interfacial reorganization within the system, transforming it from a water-in-oil (W / O) type to a bicontinuous phase structure. (4) Structuring and molding: The functional resin is added to the integrated system and stirred to dissolve. The system is then crystallized and solidified by gradient cooling. After injection molding or extrusion molding, the finished product is aged.

[0007] Preferably, in step (1), the organic pigment and the interface modifier are mixed in a sealed container, heated to 55~70°C, and kept for 40~50 minutes to perform solid-phase surface passivation treatment to form a paste-like premix. Alternatively, at a speed of 1500 rpm, inorganic pigments and functional fillers are added, and the silane coupling modifier is sprayed into the dry powder state through an atomizing nozzle.

[0008] In the compositions of this invention, the composite interface modifier acts as a "molecular bridge." Its lipophilic end is anchored to the wax-based material and the oil phase via van der Waals forces, while its hydrophilic end is bonded to the aqueous matrix via hydrogen bonds. For solid pigments, the interface modifier encapsulates them through polar forces or chemical bonds (such as coupling).

[0009] When a user creates art on paper, mechanical shear forces disrupt the static equilibrium of the interfacial phases. At this point, the oil phase is released first to provide lubrication, followed by the migration of solid particles into the paper fibers. If water is introduced at this time, the aqueous phase component will rapidly diffuse along the hydrophilic channels established by the interfacial modifier, causing the pigment particles to shift and thus achieving the watercolor effect.

[0010] Preferably, the melting temperature in step (2) is 95~100℃; the wax base material is one or more of beeswax, microcrystalline wax, water-soluble wax, stearic acid, Fischer wax, stearic acid synthetic wax, and paraffin wax; the lubricant is a modified plant-derived non-polar oil or a highly polar synthetic lubricating ester.

[0011] Preferably, in step (3), the multi-hydroxyl hydrophilic matrix is ​​hydrophilic modified cellulose; the stirring is 2000~3000 rpm, and the aqueous phase component is preheated to 90~95℃.

[0012] Phase transition temperature (PIT): Around this temperature, the hydrophilic-lipophilic balance (HLB) of nonionic surfactants changes dramatically, the interfacial tension of the system reaches a minimum, which is conducive to the formation of extremely fine droplet distribution.

[0013] Shear rate and Reynolds number: The rotational speed of a high-shear emulsifier directly determines the particle size of the dispersed phase. According to Kolmogorov's microscale theory, the size of the microvortex must be smaller than the diameter of the target droplet to ensure effective energy transfer.

[0014] Preferably, in step (4), the integrated system is cooled to 80°C and an additive is added. The additive includes one or more of the following: reinforcing agent, rheology modifier, film-forming aid, silane coupling modifier, crack-resistant agent, and temperature-resistant agent.

[0015] Preferably, the gradient cooling process in step (4) includes a rapid cooling zone, an isothermal crystallization zone, and a slow cooling zone; Rapid cooling zone: The temperature is reduced from 80°C to 65°C at a rate of approximately 5°C / min, inducing the generation of a large number of tiny crystal nuclei; Isothermal crystallization zone: Maintain at 65℃ for 15 minutes to allow crystal nuclei to grow uniformly; Slow cooling zone: cooled to room temperature at a rate of approximately 1.5°C / min.

[0016] Gradient cooling rate: The crystallization morphology of the wax-based component depends on the degree of supercooling. By programmable cooling, wax molecules can be guided to form small spherulites rather than large needle-like crystals, thus imparting a delicate thixotropic property to the medium.

[0017] Preferably, the pigment also contains fillers.

[0018] Preferably, by mass percentage, the composition is as follows: wax-based material 18.5-30.0%, lubricant 5.0-16.5%, pigment 35.0-42.0%, composite interface modifier 7.5-9.0%, polyhydroxy hydrophilic matrix 10.0-19.0%, and the remainder is additives.

[0019] Preferably, by mass percentage, the composition is as follows: wax-based material 18.5-23.0%, lubricant 12.0-16.5%, pigment 28.0-33.5%, composite interface modifier 6.5-9.0%, multi-hydroxyl hydrophilic matrix 14.5-19.0%, and the remainder is additives.

[0020] Preferably, by mass percentage, the composition is: wax-based material 25.5-30.0%, lubricant 5.0-8.5%, pigment 35.0-42.0%, composite interface modifier 4.5-7.0%, multi-hydroxyl hydrophilic matrix 10.0-14.5%, and the remainder being additives.

[0021] The present invention also provides the application of the above-mentioned creative medium composition in writing materials, painting materials, and coatings.

[0022] The beneficial effects of this invention are: This invention discloses a four-phase synergistic creative medium composition that, through advanced interface engineering technology, constructs a microscopic equilibrium of oil, water, solid, and interface phases within a macroscopically homogeneous system. The ingenuity of this structure lies in the fact that it is not a simple mixture of components, but rather, under a thermodynamically metastable state, through precise control of the preparation method, each phase can undergo controlled phase transitions or interface releases when subjected to shear forces (such as writing or smearing) or solvent effects (such as water-based diffusion).

[0023] From a molecular dynamics perspective, the four-phase synergistic structure utilizes the directional arrangement of composite interface modifiers and coupling agents at the interface phases to reduce the Gibbs free energy of the system. The relationship between its interfacial tension and the chemical potential of the components follows the following thermodynamic equation:

[0024] In the preparation method of this invention, by optimizing temperature and pressure, the increase in interface area no longer leads to severe instability of the system, thereby achieving uniform distribution of high-load solid pigments in the oil-water bicontinuous phase, thus realizing the successful preparation of a "full-function" medium.

[0025] The preparation method of this invention, as its core technology, is innovative in that it deeply integrates "controlled phase transition" and "high-shear emulsification." This method differs from the traditional hot-melt method; its core logic lies in inducing phase transition in the system by changing the feeding sequence and shear energy level.

[0026] In traditional preparation processes, solid particles often agglomerate during cooling due to excessively high surface energy, resulting in a rough medium texture. This invention introduces a pre-dispersion process, first modifying the surface of pigment particles with an interface modifier to change them from hydrophilic to amphiphilic. Subsequently, by precisely controlling the dropping rate of the aqueous phase, the system undergoes a microscopic reconstruction at the critical point, transforming from a water-in-oil (W / O) emulsion to a complex multiple emulsion (W / O / W or O / W / O). Detailed Implementation

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1: A four-phase synergistic professional-grade high-saturation creative medium composition (flexible synergistic type) This embodiment is designed for professional art creation needs, focusing on achieving extremely high color saturation, excellent layering properties (oil pastel characteristics), and instant water-soluble blending power (watercolor characteristics). In this formulation design, the physical adhesion of the medium to the paper surface is enhanced by increasing the ratio of the oil phase to the interface phase.

[0029] Table 1 Formulation of the creative medium composition of Example 1

[0030] A method for preparing a professional-grade, high-saturation creative medium composition includes the following steps: Phase 1: Solid-phase pretreatment and surface passivation In a premixing vessel with controlled ambient temperature, surface-modified organic pigment E is first added. The stirring system is then started, and a composite interface modifier is slowly added. The purpose of this process is to utilize the molecular head groups of the modifier to bind with the active sites on the pigment surface, forming a monomolecular-thick protective film. Subsequently, the temperature is raised to 65°C and maintained for 45 minutes. This stage is called "surface passivation," where thermal motion accelerates the directional alignment of the modifier molecules. The material is observed to gradually transform from a dry powder to a wet paste, yielding a paste-like premix. This indicates that the solid phase surface energy has been effectively reduced, preparing it for subsequent entry into the oil phase.

[0031] Phase 2: Oil Phase Melting and Continuous Phase Construction In the main reactor, high-melting-point synthetic wax complex A and modified plant-derived non-polar oil B are added. The heating system is started, using a heat transfer oil circulation heating method to raise the temperature to 100°C. At this temperature, the synthetic wax completely melts and becomes miscible with the non-polar oil to form a homogeneous, transparent, continuous oil phase matrix.

[0032] Ensure that the rheology modifier forms an initial three-dimensional network structure in the molten wax base. This structure is crucial for the thixotropic properties of the final product: providing hardness when at rest (like a crayon / pencil) and shear thinning under pressure (like an oil pastel).

[0033] Phase 3: Controlled Phase Transition and Four-Phase Integration This is the most crucial step in the preparation method. The paste-like premix prepared in the first stage is slowly added to the molten oil phase in the second stage. The stirring speed is increased to 2500 rpm for initial dispersion, allowing the pigment particles to be uniformly embedded in the oil phase framework.

[0034] At this point, under ultrasonic assistance (500W power), the preheated 90℃ polyhydroxy hydrophilic matrix C (i.e., the aqueous phase) was dripped into the reactor at a constant rate of 50 ml / min using a precision metering pump. During this process, drastic interfacial reorganization occurred within the system. As the proportion of the aqueous phase increased, the system evolved from a W / O type to a bicontinuous phase structure.

[0035] Phase 4: Structural Strengthening and Gradient Cooling Molding After homogenization, the system is cooled to 80°C, and a structurally reinforcing resin is added. Under high shear, the resin rapidly disperses and dissolves, further filling the gaps in the microstructures and acting as a structural support similar to "steel bars."

[0036] The cooling process then begins. A segmented cooling strategy is employed. Rapid cooling zone: Temperature drops from 80℃ to 65℃ at a rate of 5℃ / min. This stage aims to rapidly cross the supercooled zone of the wax base, inducing the generation of numerous tiny crystal nuclei.

[0037] Isothermal crystallization zone: Maintaining 65℃ for 15 minutes allows crystal nuclei to grow uniformly in a stable thermodynamic environment, forming a dense microcrystalline structure.

[0038] Slow cooling zone: cooled to room temperature at a rate of 1.5℃ / min.

[0039] Finally, the material is introduced into a vacuum degassing system to remove trace amounts of air bubbles mixed in during the process, and then injected into a mold. After 24 hours of aging, the finished product exhibits perfect four-phase synergistic properties.

[0040] Example 2: A four-phase synergistic high-precision detail drawing medium composition (hard synergistic type) To achieve high hardness and a smooth feel, Example 2 increased the proportion of inorganic solid filler and selected a compound system of natural plant wax and water-based synthetic resin with higher hardness.

[0041] Table 2 Formulation of Creative Media Composition in Example 2

[0042] A method for preparing a high-detail drawing medium composition includes the following steps: Phase 1: Dry mixing and interfacial coupling of solid phases In a high-speed mixer (1500 rpm), a composite inorganic pigment / functional filler is added. In its dry powder state, a silane coupling modifier is sprayed through an atomizing nozzle. This step utilizes the molecular bridging effect of the silane coupling agent to establish chemical bonding sites on the surface of the pigment particles.

[0043] Phase 2: Construction and Pre-emulsification of High Modulus Matrix A blend of natural plant wax / refined paraffin wax and a highly polar synthetic lubricating ester is added to the main reactor and heated to 110°C for melting. At this high temperature, the wax molecular chains are in a fully extended state.

[0044] A nonionic / anionic composite emulsifier is added, along with a volatile film-forming aid. The stirring speed is controlled at 800 rpm to form a high-viscosity, high-modulus oil-phase matrix. To provide temporary plasticization during subsequent molding, the evaporation of the finished product after drying will leave a microporous structure, facilitating water penetration and thus achieving watercolor properties.

[0045] Phase 3: Interface-Induced Phase Transition and High-Load Integration The modified solid filler, processed in the first stage, is added in batches to the molten oil matrix. Due to the extremely high solid content (over 40%), the system exhibits obvious non-Newtonian fluid characteristics. At this point, a combination system of a heavy-duty paddle agitator and a high-shear emulsifying head needs to be activated.

[0046] The hydrophilic modified cellulose solution was preheated to 95°C and then added dropwise to the system at a constant rate of 50 ml / min under ultrasonic assistance (500 W power). The introduction of ultrasound is an important variant when treating high-load systems, as it can generate a cavitation effect, forcing the aqueous phase into the high-viscosity oil-solid mixture to form a nanoscale dispersed phase.

[0047] Phase 4: Precision Extrusion and Controlled Aging Molding Using a precision extrusion process, the mixture is transferred to a twin-screw extruder, and the barrel temperature distribution is set as follows: Feeding section: 95℃ Compression section: 105℃ Metering range: 90℃ Head mold: 85℃ The material is extruded in a rod shape and immediately placed in a cold water bath for surface setting, followed by controlled aging in a constant temperature oven (45℃) for 72 hours. During aging, volatile film-forming aids slowly migrate out, micro-stress within the system is released, and the crystal lattice structure becomes more compact. The final product can not only be sharpened into a sharp lead like a 2H pencil, but also achieves excellent color performance on paper.

[0048] Microdynamics and interfacial mechanics analysis in the preparation method of this invention In the preparation process of the above two embodiments, the superiority of the preparation method of the present invention is mainly reflected in the dynamic management of the interface phase. In a four-phase system, the interface is not only the boundary between each phase, but also the core hub for stress transfer and functional transformation.

[0049] "Molecular bridging" mechanism of the interface phase In the composition, the interface modifier (such as D in Example 1 and K in Example 2) acts as a "molecular bridge." Its lipophilic end is anchored to the synthetic wax and oil phase by van der Waals forces, while its hydrophilic end is bound to the aqueous matrix (such as polyhydroxy compounds or cellulose solutions) by hydrogen bonds. For solid pigments, the interface modifier encapsulates them through polar forces or chemical bonds (such as coupling effects).

[0050] When a user creates art on paper, mechanical shear forces disrupt the static equilibrium of the interfacial phases. At this point, the oil phase is released first to provide lubrication, followed by the migration of solid particles into the paper fibers. If water is introduced at this time, the aqueous phase component will rapidly diffuse along the hydrophilic channels established by the interfacial modifier, causing the pigment particles to shift and thus achieving the watercolor effect.

[0051] The control law of shear field on phase size In the preparation method of this invention, the relationship between the shear rate and the diameter of the dispersed phase conforms to an empirical formula:

[0052] Where C is a constant, and ηd and ηc are the viscosities of the dispersed and continuous phases, respectively. In Example 1, to achieve a pastel-like smoothness, the size of the aqueous and solid phases was controlled at the sub-micron level by increasing the shear rate (5000 rpm), thereby eliminating roughness. In Example 2, a more structured phase distribution was achieved by adjusting the viscosity ratio (through a high proportion of solid filler) to support high hardness requirements.

[0053] Stability evaluation and environmental adaptability of the four-phase synergistic structure As a complex metastable system, the long-term stability of the four-phase synergistic structure is crucial to the success of the fifth preparation method. In our research, we employed accelerated aging experiments and dynamic thermomechanical analysis (DMA) to evaluate the product.

[0054] 1. Comparison of accelerated aging test data The table below records the performance retention rates of Examples 1 and 2 under extreme environments (with initial performance as 100%).

[0055] Table 3 Results of accelerated aging test

[0056] Experimental results show that the four-phase structure constructed by the method of this invention has extremely high weather resistance. This is attributed to the microcrystalline framework formed by the gradient cooling process, which acts like a miniature container array, firmly locking volatile or easily migrating components within the microscopic voids.

[0057] 2. In-depth analysis of thixotropy and yield stress The "feel" of a fully functional medium is essentially a manifestation of the material's yield stress. Shear scanning of Example 1 using a rheometer revealed that its yield stress decreased gradually with increasing temperature, rather than undergoing an abrupt change like that of pure wax.

[0058]

[0059] The Herschel-Bulkley model perfectly fits the rheological curve of the composition. This smooth stress response means that artists can precisely control the amount of color released by adjusting the pressure applied, transitioning from soft, pencil-like strokes to heavy, pastel-like layering.

[0060] Through an in-depth analysis of the preparation method in the invention patent "A Creative Medium Composition with a Four-Phase Synergistic Structure" and the presentation of two specific cases, we can conclude that this new material based on the four-phase synergistic theory has successfully solved the century-old problem of the compatibility of oil, water, solid, and interface phases in painting media.

[0061] Example 1, through high oil phase and fine shearing, defines a new level of expressiveness for professional painting tools; Example 2, through high solid phase loading and precision extrusion, demonstrates the potential of functional integration in technical drawing and detail depiction. These two cases are not merely a collection of process parameters, but rather a precise response of materials science to the needs of artistic creation.

[0062] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0063] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for preparing a creative medium composition with a four-phase synergistic structure, characterized in that, Includes the following steps: (1) Solid-phase pretreatment: The pigment is treated with an interface modifier to obtain the modified pigment; (2) Construction of oil phase matrix: The wax-based material and lubricant are melted in the main reactor to form a uniform continuous oil phase matrix; (3) Controlled phase transformation and integration: The modified pigment from step (1) is added to the molten oil phase from step (2) and stirred to disperse evenly. The preheated aqueous phase component is added dropwise at a constant rate of 40~60 ml / min to cause interfacial reorganization within the system, transforming it from a water-in-oil (W / O) type to a bicontinuous phase structure. (4) Structuring and molding: The functional resin is added to the integrated system and stirred to dissolve. The system is then crystallized and solidified by gradient cooling. After injection molding or extrusion molding, the finished product is aged.

2. The preparation method according to claim 1, characterized in that, Step (1) Mix the organic pigment and the interface modifier in a sealed container, heat to 55~70℃, maintain for 40~50 minutes, and perform solid-phase surface passivation treatment to form a paste-like premix. Alternatively, at a speed of 1500 rpm, inorganic pigments and functional fillers are added, and the silane coupling modifier is sprayed into the dry powder state through an atomizing nozzle.

3. The preparation method according to claim 1, characterized in that, The melting temperature in step (2) is 95~100℃; the wax base material is one or more of beeswax, microcrystalline wax, water-soluble wax, stearic acid, Fischer wax, stearic acid synthetic wax, and paraffin wax; the lubricant is a modified plant-derived non-polar oil or a highly polar synthetic lubricating ester. In step (2), one or more of the following are added: rheology modifier, film-forming aid, crack-resistant agent, and temperature-resistant agent.

4. The preparation method according to claim 1, characterized in that, In step (3), the multi-hydroxyl hydrophilic matrix is ​​hydrophilic modified cellulose; the stirring is 2000~3000 rpm, and the aqueous phase component is preheated to 90~95℃.

5. The preparation method according to claim 1, characterized in that, In step (4), the integrated system is cooled to 80°C and the functional resin is added.

6. The preparation method according to claim 1, characterized in that, The gradient cooling process in step (4) includes a rapid cooling zone, an isothermal crystallization zone, and a slow cooling zone; Rapid cooling zone: The temperature is reduced from 80°C to 65°C at a rate of approximately 5°C / min, inducing the generation of a large number of tiny crystal nuclei; Isothermal crystallization zone: Maintain at 65℃ for 15 minutes to allow crystal nuclei to grow uniformly; Slow cooling zone: cooled to room temperature at a rate of approximately 1.5°C / min.

7. The preparation method according to claim 1, characterized in that, The pigment also contains fillers.

8. The preparation method according to claim 1, characterized in that, By weight percentage, wax-based materials account for 18.5-30.0%, lubricants for 5.0-16.5%, pigments for 35.0-42.0%, composite interface modifiers for 7.5-9.0%, polyhydroxy hydrophilic matrix for 10.0-19.0%, and the remainder are additives.

9. The creative medium composition prepared by the preparation method according to any one of claims 1 to 8.

10. The application of the creative medium composition according to claim 9 in writing materials, painting materials, and coatings.

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